1 Samuel 21:10

"And David arose, and fled that day for fear of Saul, and went to Achish the king of Gath."

Cross References (ranked by relevance)

And when Jehoiakim the king, with all his mighty men, and all the princes, heard his words, the king sought to put him to death: but when Urijah heard it, he was afraid, and fled, and went into Egypt;

1 Kings 19:3

And when he saw that, he arose, and went for his life, and came to Beersheba, which belongeth to Judah, and left his servant there.